[llvm] [AsmPrinter] Avoid repeated hash lookups (NFC) (PR #128995)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/128995

None

>From 27e7210ae7c98a70d55b523de7ffa7af4a1e97ca Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Wed, 26 Feb 2025 07:41:14 -0800
Subject: [PATCH] [AsmPrinter] Avoid repeated hash lookups (NFC)

---
 llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp b/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
index d87649c4e6567..5442fb15202ea 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
@@ -401,10 +401,9 @@ static void handleNewDebugValue(InlinedEntity Var, const MachineInstr &DV,
       for (const MachineOperand &Op : DV.debug_operands()) {
         if (Op.isReg() && Op.getReg()) {
           Register NewReg = Op.getReg();
-          if (!TrackedRegs.count(NewReg))
+          if (TrackedRegs.insert_or_assign(NewReg, true).second)
             addRegDescribedVar(RegVars, NewReg, Var);
           LiveEntries[Var].insert(NewIndex);
-          TrackedRegs[NewReg] = true;
         }
       }
     }